Display screen or portion thereof with a graphical user interface for well drilling



A portion of the disclosure of this patent document contains material that is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the U.S. Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever.

The sole FIGURE is a front view of a display screen or portion thereof with a graphical user interface for well drilling showing our new design.

The outermost broken lines showing a display screen illustrate the environment of the claimed design and form no part of the claim. The interior broken lines show elements of the graphical user interface that form no part of the claim. 

CLAIM The ornamental design for a display screen or portion thereof with a graphical user interface for well drilling, as shown and described. 